Cylindrical magnet assembly assembled to a bore tube by a number of inserts

Abstract

A cylindrical magnet assembly has at least one coil mounted on a former, assembled to a bore tube by a number of inserts within holes formed in a material of the former. Each insert can bear on a dished radially outer extremity of a radially-outwardly directed protrusion or each insert can bear on a radially outer concave surface of a radially-inwardly directed protrusion.

What is claimed is: 
     
       1. An assembly comprising:
 a cylindrical magnet assembly, which comprises at least one coil mounted on a former, assembled to a bore tube by a number of inserts within holes formed in a material of the former, each insert bearing on a radially outer concave surface of a radially-inwardly directed protrusion formed in a material of the bore tube. 
 
     
     
       2. The assembly according to  claim 1 , wherein the number of inserts each have a convex radially inner extremity that extends beyond the holes formed in the material of the former. 
     
     
       3. The assembly according to  claim 1 , wherein the number of inserts have threads that engage in corresponding threads within the holes in the material of the former. 
     
     
       4. The assembly according to  claim 3 , wherein the number of inserts are grub screws. 
     
     
       5. The assembly according to  claim 1 , wherein the number of inserts has a bayonet-type fitting. 
     
     
       6. The assembly according to  claim 1 , wherein the number of inserts are plugs, which are mounted to the former by screws arranged adjacent to the holes formed in the material of the former. 
     
     
       7. The assembly according to  claim 1 , wherein the number of inserts are plain inserts that are glued, welded, brazed, or soldered to the former. 
     
     
       8. The assembly according to  claim 1 , wherein the number of inserts are spring-loaded inserts configured to grip an inside surface of the holes formed in the material of the former. 
     
     
       9. An assembly comprising:
 a cylindrical magnet assembly, which comprises at least one coil mounted on a former, assembled to a bore tube by a number of inserts within holes formed in a material of the former, wherein each insert bears on a radially outer surface of a radially directed protrusion formed in a material of the bore tube. 
 
     
     
       10. The assembly according to  claim 9 , wherein the number of inserts have threads that engage in corresponding threads within the holes in the material of the former. 
     
     
       11. The assembly according to  claim 9 , wherein the number of inserts each have a convex radially inner extremity that extends beyond the holes formed in the material of the former.